Process for pH and fire control in pulp balers

Details Process for pH and fire control in pulp balers Process for pH and fire control in pulp balers

1992-10-19

1994-02-01

Jones, W. Gary

Paper making and fiber liberation

Processes and products

162 63, 169 5, 169 45, 169 54, D21H 1116

Patent

active

052829324

ABSTRACT:
A fluffy pulp previously dried, having a consistency by 90%, is introduced in a baler where it is subjected to a carbon dioxide comprising atmosphere in order to both reduce or eliminate the fire risk in the baler and to decrease the pH of the pulp by chemically reacting with it. Both gaseous and liquid (snow) carbon dioxide can be used. Preferably, carbon dioxide snow is injected at the bottom of the baler to accelerate the pH control of the pulp, just before compressing the pulp in bales, which compression enhances the pH control reaction between the pulp and the carbon dioxide.

REFERENCES:
patent: 1261715 (1918-04-01), Cuddy
patent: 1880244 (1928-10-01), Dugas
patent: 3627630 (1971-12-01), Gagnon
patent: 3901322 (1975-08-01), Winston
patent: 4111362 (1978-09-01), Carter
patent: 4658716 (1987-04-01), Boissevain

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